Tcpreplay - Pcap editing and replaying utilities

Tcpreplay is a suite of free Open Source utilities for editing and replaying
previously captured network traffic. Originally designed
to replay malicious traffic patterns to Intrusion Detection/Prevention Systems,
it has seen many evolutions including capabilities to replay to web servers.

Version 4.0.0 introduces features and performance enhancements to support
switches, routers, and IP Flow/NetFlow appliances.